Spoke for vehicle-wheels.



Y H. o IEGK.` SPOKE POR VEHICLE WHEELS.

APPLIOATI'ON FILED HAB. 9, 190,9.

Patented Sept. 21, 1909.

n4 @saar HARTWIG 0. PECK, 0F PORTLAND, OREGON, .ASSIG-NOR Tu) H. 0. PECK`AUIOlilIOBIIfll WHEEL COMPANY, OF PORTLAND, OREGON, INCORPORATED.

SPOKE FOR VEHICLE-WHEELS.

Specification of Letters Patent. Patented Sgpt. 2i, QEIBQ.

Application filed March 9, 1909. Serial No. 482,230.

To all whoml tt may concern:

Be it known that I, HARTWIG O. PEGK, re-

siding at Portland, in the county of Multnomah and State of Oregon, haveinvented certain new and useful Im rovements in Spokes forVehicle-Wheels, o which the following is a specification.

My invention relates to an improved construction of spoke for springwheels and in its generic nature resides in providing a spoke consistingof a tubular or casing sec tion and a` tubular rod section carrying apacked piston to separate the casing into two air chambers in one ofwhich a spring is contained. The other chamber serves as a container forair to form a neumatic cushion. The tubular rod section is also providedwith a spring to counterbelance the spring in the casing to apredetermined degree, and the piston carried by the casing projects intothe tubular rod section to be engaged by the spring thereon, the pistonfitting therod snugly so as to form an airv cushion to assist inchecking violent movements of the two sections of the spoke.

More specifically my invention` embodies those novel details ofconstruction, combination and arrangement of parts all of which will befirst fully described, then be specilically pointed out in the appendedclaims, and illustrated in the accompanying drawings, in which:

Figure 1, is a side elevation of a spoke embodying my invention. Fig. 2,is a central, vertical, longitudinal section on the line 2 2 of Fig. 1.Fig. 3, is acentral, vertical, longitudinal section of a modified formof my invention. n

Referring -now tothe accompanying drawings, in which like letters andnumerals of reference indicate like parts in all of the figures, 1designates the tubular casing, one end of which 1s threaded as at 1a toreceive the plug 2 which has a bearing 2a to receive a securing pin, bymeans of which the spoke may be secured to the hub or rim of the wheel,as the case may be. The plug 2 has a chamber 2b merging with acountersunk threaded portion 2c to receive a fixed piston 8 having aflange 9b to seat in the chamber 2", and a threaded shank 88L to engagethe threaded portion 2c of the plu 2. The other end of the casing 1 isthreade as at 1b to receive the adjusting closure plug 3 that iscentrally apertured at 3a to permit passage lo f the tubular rod section4 of the spoke. A

l packing bushing 15, of librous, or other suitable material, isthreaded into the plug 3 around the rod section 4, as shown in' thedrawings. I

The outer end ofthe rod section 4 is closed by a plug l" at 4L into therod section to Lto; L closure therefor, the plug 5. being irec. as at 5ato receive a pivot bolt, y :means which the same may be secured to huber rim of a wheel, as the case may be;

Within the casing 1 the tubular rod section 4 carries a piston 6 that isthreaded at 4b ontov the end of the rod 4 and is packed as at 6a todivide the casing into chambers 11 and 22,` respectively. Within the`chamber 22 an auxiliary spring 7 is provided, and within the rod 4 asecond coil spring 9 is provided to abut the plug 5, and the plunger 8.The, spring 9 opposes the spring 7 to a sufficient degree to keep thepiston 6 in about the position shown in the drawings. InsteadV ofproviding the plug 2 with a threaded countersunk portion 2C, suchvcountersunk portion may be omitted and the plug 20 in Fig. 3 be formedwith such portion, the plug 2() having an eye 20a corresponding to that2a of the plug 2. The rod`4 and the casing 1 may contain a suitableamountof lubricant to oil the various parts.

Instead of providing the plunger 8, I may omit the same as shown in Fig.3, of the drawings, and I may also omit the spring 9, and when this isdone, I prefer to insert-a plug 12 into the end of the rod 40, and theplug 12 may be provided with small apertures 12a to open communicationbetween the chamber 11 and the interior of the rod 40 to increase thecapacity of the air cushion, formed by the air in the chamber 11 and inthe rod 40. The rod 40 is threaded at 40a to receive the member 5.

In the practical application of my nvention, the spokes are secured to asuitable vhub and rim to form a resilient wheel.

through the apertures 12 into the rod 4 until the pressure in the rod 4and the chamlagging of the telescoping action of the spoke sections andprevent sudden telescoping of the spoke sections land likewise prevent asudden action of the spoke sections in the opposite direction.

From the fore oing description, taken in connection with te accompanyingdrawings, it' is thought the complete construction, operation and manyadvantages of my invention will be readily understood by those skilledin the art to which the invention ap ertains.

hat I claim is: Y

1. A spoke for vehicle wheels comprising a casing, a tubular rodtelescoped into the casing, a packing member carried by the casing andsurrounding the rod, a packed piston carried by the rod within thecasing to divide the casing into two chambers, a sprin in one of saidchambers, the other cham er adapted to contain air to .serve as an aircushion, said tubular rod having an internal air cushion chamber, alunger relatively fixed with the casing an projecting within the tubularrod, and a spring within the tubular rod to engage the plunger.

2. A spoke for vehicle wheels comprisin a spoke casing, a closure plugfor one en of the casing, an adjustable closure lug for the other end ofthe casin a hollow rod projecting through said a justable closure Apluginto the casing, a packed piston carried by the inner end of saidvhollow rod, a closurel plu for the outer end of said hollow rod, a punger carried by the first mentioned closure plug of the casing, andprojecting within the inner end of said tubular rod,

combined with a spring within the casin ber 11 is equalized, the passagethrough the l. apertures 12* being slow so as to cause a ngmally tendingto telescope the casing an r 3. A spoke for vehicle wheels comprising aspoke casing, a closure plug for one en of the casing, an adjustableclosure plug for the other end of 'the casing, a 'hollow rod projectingthrough said adjustable closure plug into the casin a packed pistoncarried y the inner end o said hollow rod, a closure plu for theouterend of said hollow rod,

a p unger carried by the first mentioned closure plug of the casing, andprojecting Within the inner end of said tubular rod, combined Awith aspring within the casin normally tending to telescope the casing androd, and a spring within the rod normally tending to oppose the action`of said tele-- scoping means.

4. A spoke for vehicle Wheels comprising a casing, a closure plug forone end of the casing, an adjustable closure plug for the other end ofthe casing, a hollow rod proj ectingl through said adjustable closurepluo` into the casing, a packed piston carried by said tubular rodwithin the casing to divide the casing into an air chamber and a suctionchamber, a spring Within the suction chamber normally tending totelescope the rod and casing against the action of the air cushion, anda member projected partly within the tubular rod and partly projectingoutside of the tubular rod and within the casing.

i HARTWIG o. DECK. Witnesses: i

LS. ARMSTRONG, W. J. MAKELIM.

